import axios from 'axios';
import {
  ElNotification,
  ElMessageBox,
  ElMessage,
  ElLoading,
} from 'element-plus';
import { getToken, removeToken } from '@/utils/auth';
import errorCode from '@/utils/errorCode';
import { tansParams, blobValidate } from '@/utils/ruoyi';
import cache from '@/plugins/cache';
import { TOKEN_KEY, TOKEN_KEY_PREFIX } from '@/constants/token-constants';
import { CACHE_SESSION_AXIOS } from '@/constants/cache-keys-constants';
import {
  APP_REQUEST_HEADER_CODE,
  APP_REQUEST_HEADER_VERSION,
} from '@/constants/app-constants';
import { saveAs } from 'file-saver';
import useUserStore from '@/store/modules/user';

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers = {
  [APP_REQUEST_HEADER_CODE]: import.meta.env.VITE_APP_CODE,
  [APP_REQUEST_HEADER_VERSION]: import.meta.env.VITE_APP_VERSION,
  'Content-Type': 'application/json;charset=utf-8',
  // 使用mock.apifox.cn时开启
  // apifoxToken: 'xBhhq0RbnbKByxColuCtxUKF8gEhS7lW',
};

// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 10000,
});

// request拦截器
service.interceptors.request.use(
  config => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    if (getToken() && !isToken) {
      config.headers[TOKEN_KEY] = TOKEN_KEY_PREFIX + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (
      !isRepeatSubmit &&
      (config.method === 'post' || config.method === 'put')
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === 'object'
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON(CACHE_SESSION_AXIOS);
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ''
      ) {
        cache.session.setJSON(CACHE_SESSION_AXIOS, requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON(CACHE_SESSION_AXIOS, requestObj);
        }
      }
    }
    return config;
  },
  error => {
    console.log(error);
    Promise.reject(error);
  }
);

// 登录身份失效401
function error401() {
  if (!isRelogin.show) {
    isRelogin.show = true;
    ElMessageBox.confirm(
      '登录状态已过期，您可以继续留在该页面，或者重新登录',
      '系统提示',
      {
        confirmButtonText: '重新登录',
        cancelButtonText: '取消',
        type: 'warning',
      }
    )
      .then(() => {
        isRelogin.show = false;
        useUserStore()
          .logOut()
          .finally(() => {
            removeToken();
            window.location.reload();
          });
      })
      .catch(() => {
        isRelogin.show = false;
      });
  }
  return Promise.reject('无效的会话，或者会话已过期，请重新登录。');
}

// 响应拦截器
service.interceptors.response.use(
  res => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode['default'];
    // 二进制数据则直接返回
    if (
      res.request.responseType === 'blob' ||
      res.request.responseType === 'arraybuffer'
    ) {
      return res.data;
    }
    if (code === 401) {
      return error401();
    } else if (code === 500) {
      ElMessage({ message: msg, type: 'error' });
      return Promise.reject(new Error(msg));
    } else if (code === 601) {
      ElMessage({ message: msg, type: 'warning' });
      return Promise.reject(new Error(msg));
    } else if (code !== 200) {
      ElNotification.error({ title: msg });
      return Promise.reject('error');
    } else {
      return Promise.resolve(res.data);
    }
  },
  error => {
    console.log('err' + error);
    let { message } = error;
    if (message.endsWith('code 401')) {
      return error401();
    }
    if (message == 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常';
    }
    ElMessage({ message: message, type: 'error', duration: 5 * 1000 });
    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: '正在下载数据，请稍候',
    background: 'rgba(0, 0, 0, 0.7)',
  });
  return service
    .post(url, params, {
      transformRequest: [
        params => {
          return tansParams(params);
        },
      ],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      responseType: 'blob',
      ...config,
    })
    .then(async data => {
      const isBlob = blobValidate(data);
      if (isBlob) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode['default'];
        ElMessage.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch(r => {
      console.error(r);
      ElMessage.error('下载文件出现错误，请联系管理员！');
      downloadLoadingInstance.close();
    });
}

export default service;
